Thermometers are of critical importance! Based on the temperature, you can determine at what stage you are in the distillation process. Pure alcohol evaporates at 78oC. By remaining the vapor in the top of the column at this temperature, a clean alcohol with a minimum of impurities will be obtained.The most practical thermometer in my view is a digital one as:
- it provides a much easier reading of temperature
- it is more precise and you can set alarm sound if the temperature deviates from the set temperature.
Obviously, a digital thermometer is the most expensive version. A standard glass thermometer will do as well.
Basic rules you need keep in mind
Where to get it: